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LMH6702: Sink / Source Capabilities

Part Number: LMH6702
Other Parts Discussed in Thread: OPA695

Hi Team,

Just want to confirm,  the LMH6702 can sink current as well as source, correct? +/-50mA

Thanks,
Mitchell

  • Morning Mitchell, 

    The LMH6702 is sparse on this spec, but +/-50mA typ - sitting inside the part is a characteristic more like this from the OPA695 - the BurrBrown part the national guys were matching with the LMH6702 - this is showing the beginnings of a claw curve showing the loss of voltage swing with higher output current - the LMH6702 has this type of characteristicas as well, just not shown, 

    And then we were trying to show some overtemp info - I see now the 2015 datasheet update from what I had done in 2003 made an error here - that "A" over in the far right indicates 100% outgoing ATE test - that only applies to 25C ambient spec., not the overtemp as implied by this update, 

    I did have an earlier OPA695 datasheet showing all the spec table detail we were putting in back then, not sure why they wasted all this good info on the update, but the part is still like the spec tables here where I had done a format trying to show min/max over different temp ranges in an admittedly dense format. 

    OPA695 Data sheet.pdf

  • Hi Mitchell,

    yes, any other interpretation wouldn't make sense.

    There's one hint in the datasheet on high load currents. In figure 7 of datasheet a 6Vpp square wave into a 100R load can be seen. With a feedback resistor of 237R at a gain of 2 an additional load of 237R x 2 = 474R appears in parallel to the 100R load, lowering the effective load seen by the OPAmp output to 83R. This will result in a load current of +/-36mA. So from figure 7 a load curent of at least +/-36mA is confirmed.

    Kai